21011475

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{6833}}^1$

素因数の和:6887

約数の個数: 24

約数和(自身を含む): 35591472

約数和(自身を除く): 14579997

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 6833, 20499, 34165, 102495, 170825, 280153, 512475, 840459, 1400765, 4202295, 7003825, 21011475]

約数ペア:

[(1, 21011475), (3, 7003825), (5, 4202295), (15, 1400765), (25, 840459), (41, 512475), (75, 280153), (123, 170825), (205, 102495), (615, 34165), (1025, 20499), (3075, 6833)]